Motor Speed Control and Isolation Board setup

Motor Speed Control and Isolation Board setup
FurnacePros
Motor Speed Control
Model 3984 Isolated
Interface Module
DIVISION OF LOCHABER CORNWALL, INC.
Field Installation Instruction
DOC NBR:
TEC-303
APRVD: JMC 17 MAY 10
PAGE 1 OF 2
1.0
SCOPE
1.1
Instructions for the installation of the Model 3984 Isolated Interface Module on an existing furnace
with a Bodine Electric drive motor and Model 3911 Motor Speed Board.
2.0
EQUIPMENT AFFECTED
2.1
Motor Speed Board Model 3911
2.2
Isolated Interface Module Model 3984
3.0
ADJUST MOTOR SPEED BOARD MODEL 3911
3.1
Start furnace. On Furnace program Process Screen, set belt speed to zero.
3.2
Using a nonconductive adjustment tool, adjust the each of the pots at the top of the motor speed board:
3.2.1 Set zero. Turn Min pot to full counter clockwise (CCW). Adjust clockwise (CW) until motor
starts. Turn CCW until motor stops.
3.2.2 Set Max pot full CW and turn back ¼ turn.
3.2.3 Set Acceleration at between full CCW and midpoint.
3.2.4 Set Deceleration at between full CCW and midpoint.
3.2.5 Set Torque to full CW, adjust slightly CCW.
3.3
For reference, the pots to be adjusted are located from left to right as in the following table.
3911 POTS
Preferred
Settings:
MAX
just CCW
from Full
CW
MIN
ACCEL
DECEL
turn CW
until motor
stops
midway bet
CCW and
midpoint
midway bet
CCW and
midpoint
4.0
INSTALL 3984 ISOLATED INTERFACE
MODULE
4.1
Inspect 3984 Board and verify that DS1 dip
switches are all in OFF positions.
4.2
Make sure furnace is DISCONNECTED
from facility power.
4.3
Remove panels to enable access to drive
motor at the exit end of the furnace.
4.4
Using the supplied Mounting Template for
the 3984 Isolated Interface Module, mark for
4 holes. Drill using 4 mm (5/32 inch) drill
bit. In a convenient place on the motor
control panel. (see Figure 1)
4.5
Mount the 3984 Isolated Interface Module
using the supplied #8 machine screw
fasteners.
TORQ
just CCW
from Full
CW
Figure 1 Motor control Panel Layout
3984 Isolated
Interface Module
Field Installation Instruction
DOC NBR: TEC-303
PAGE 2 OF 2
4.6
Disconnect the spade wire connections from S1 and S2 on the 3911 Motor Speed board.
4.7
Take these same wires and Plug black S1 into ICOM and white S2 into VIN1 connectors on the 3984
Isolated Interface Module. (see Figure 1)
4.8
Plug connectors coming from
the VOUT & COM on the 3984
Isolated Interface Module black
S1 and white S2 wires into the
3911 Motor Speed board spade
connectors labeled S1 and S2
respectively.
4.9
Connect power (see Figure 2).
Loosen screws on the 3911
Motor Speed board terminal
block marked L and N. Slip the
brown power wire terminal into
the L screw then tighten. Slip
the blue wire terminal into the N
screw then tighten. Snap the two
fuse blocks onto the DIN rail
next to the existing fuse block.
Figure 2 Power connect from 3984 module
5.0
CALIBRATE ISOLATED INTERFACE MODULE MODEL 3984
5.1
Set zero. Using a small flat screwdriver and a DC Voltmeter + on VOUT and – on COM, turn the Min
pot CCW until motor stops and Voltmeter reads 0.120 to 0.130. If DC Volts will not go under 0.200 readjust MIN pot on the 3911 board until the Volts drop to 0.120-0.130. Adjust 3984 min pot CW until
motor starts again. Turn 3984 min pot CCW again until motor stops and DC volts are within range.
5.2
Go to Furnace Calibration screen and click Transport Belt 1 Calibration checkbox to “Set 50% output
to calibrate”.
5.3
Adjust Max pot until voltage across Vout and Com equals 5.0 Vdc.
5.4
For reference, the pots to be adjusted are labeled Min and Max as in the following table.
3984 POTS
Field
Adjustment
MIN
turn CW until motor stops
6.0
REPLACE FURNACE PANELS
6.1
Replace all panels and fasteners.
7.0
CALIBRATE BELT SPEED
7.1
Use standard procedure for belt speed calibration.
MAX
3984 Vout-com = 5 Vdc or
3911
VS1-S2 = 5.0 Vdc
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